(a) Express the changes in internal energy and enthalpy of an ideal gas in a reversible adiabatic process in terms of the pressure ratio.
Explanation
In a reversible adiabatic process, the internal energy remains constant since there is no heat transfer. The change in enthalpy can be calculated using the equation ΔH = (γ / (γ - 1)) * R * T1 * ((P2 / P1)^(γ - 1) - 1).
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